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any physicists out there?
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windward1



Joined: 18 Jun 2000
Posts: 1158

PostPosted: Mon May 13, 2019 2:00 pm    Post subject: Reply with quote

Board size awning.
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carl



Joined: 25 Feb 1997
Posts: 2652
Location: SF bay area

PostPosted: Mon May 13, 2019 3:23 pm    Post subject: Reply with quote

Build a wood dock box for it.
White ASA is supposed to be more UV resistant, but I would still cover it.
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isobars



Joined: 12 Dec 1999
Posts: 19309

PostPosted: Mon May 13, 2019 3:34 pm    Post subject: Reply with quote

And put that box on or beneath the dock. It looks from last year's dock photos that there may be room beneath the decking.
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U2U2U2



Joined: 06 Jul 2001
Posts: 5073
Location: Shipsterns Bluff, Tasmania. Colorado

PostPosted: Mon May 13, 2019 7:04 pm    Post subject: Reply with quote

Secure several wood pallets, create a hollow between the top and bottom layers, add additional lumber to create a sunscreen. Use clear fin washers.
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K4 fins
4Boards....May the fours be with you

http://www.k4fins.com/fins.html
http://4boards.co.uk/
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J64TWB



Joined: 24 Dec 2013
Posts: 1263

PostPosted: Tue May 14, 2019 4:40 pm    Post subject: Reply with quote

If this is the ASA bic uses, it sounds pretty durable.
http://www8.basf.us//PLASTICSWEB/displayanyfile?id=0901a5e180005b44
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U2U2U2



Joined: 06 Jul 2001
Posts: 5073
Location: Shipsterns Bluff, Tasmania. Colorado

PostPosted: Tue May 14, 2019 4:55 pm    Post subject: Reply with quote

bluefish1 wrote:
If this is the ASA bic uses, it sounds pretty durable.
http://www8.basf.us//PLASTICSWEB/displayanyfile?id=0901a5e180005b44


His board was made in France, which doesnt mean it isnít whatís used .

Email associated with basf is
Plastics@ basf.com

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K4 fins
4Boards....May the fours be with you

http://www.k4fins.com/fins.html
http://4boards.co.uk/
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J64TWB



Joined: 24 Dec 2013
Posts: 1263

PostPosted: Tue May 14, 2019 4:58 pm    Post subject: Reply with quote

UPF vs SPF. Seems like NASA started UPF. For those interested.
https://www.nasa.gov/pdf/413404main_Fabrics.pdf

https://www.skincancer.org/publications/the-melanoma-letter/summer-2012-vol-30-no-2/clothing
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J64TWB



Joined: 24 Dec 2013
Posts: 1263

PostPosted: Tue May 14, 2019 5:16 pm    Post subject: Reply with quote

This is where I loose it. Add in Westenders ventilation gap and Iím going bowling.

https://www.windows2universe.org/sun/spectrum/multispectral_sun_overview.html
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westender



Joined: 02 Aug 2007
Posts: 1170
Location: Portland / Gorge

PostPosted: Tue May 14, 2019 7:25 pm    Post subject: Reply with quote

Make a board box, use your lake water to supply the intercooler and with a fan system the board will not be damaged. Idea Or just the box and a solar fan.
https://www.solatube.com/attic-fans

For the roof material like this. https://www.menards.com/main/building-materials/insulation/foam-board-insulation/johns-manville-foil-faced-polyiso-foam-insulation-4-x-8/w-n5050/p-1444438920894.htm
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J64TWB



Joined: 24 Dec 2013
Posts: 1263

PostPosted: Wed May 15, 2019 6:47 am    Post subject: Reply with quote

Iím going to dig a cavern under the lakebed Westender. Surely no electromagnetic radiation can get there. Wait...those damn neutrinos!

Iím going to do a light breathable cover over the semi- bombproof white ASA. Maybe measure temps.

The Ace-tec construction has 2 layers of fiberglass over the EPS then ASA.
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